Resolved 4G63 Cam confusion

[Chad Noles]

I am looking for cams for a 1993 N/A manual tranny F5M22.

I think that the original cams were 1.3974 lift intake but don't know if the exhaust were the same. I don't know very much about cams in general, though I've looked thru threads on here (dsmtuners). What I need to know is what will match the original specs in available cams under $400 bucks. Maybe slightly more if they are matched.

I can't tell if HKS or anybody has cams that meet those specs. Any help with a brief explanation of how they would work would be greatly appreciated.

 

[pauleyman]

If you want OEM specs you won't find it from HKS etc. If what you want is stock buy a used stock set. Did you mess something up or ???

 

[1990TSIAWDTALON]

I have a couple of sets of stock 6 bolts cams laying around somewhere. Post up a WTB ad like Paul has mentioned.

 

[Spleen8urLSX]

As someone mentioned you won’t find stock spec cams from an aftermarket company. I will say the myth always was one of the non turbo cams (can’t remember which if it was the intake or exhaust cam without looking it up) varied from the turbo variant and the turbo variant was an upgrade, while I do believe that cam is indeed slightly different specs myself and a few others have found the nt one actually to be more aggressive which makes sense as it helped the nt engine get up out of its own way a little easier however that difference is minimal at best and would never be noticed in a stock car. I will say quite a while back when we dyno’d my car we found it almost behaved as if it had a mild upgrade (completely internally stock nt 6 bolt engine with a 16g at the time).

That rant aside, the point of it is used cams from a factory turbo head would suffice if that’s what you find, however I’m with the rest of the class with the curiosity of why you need new stock spec cam shafts. I do have a set of NT 1g cams here in my new engine but it will be a while before I get to removing them so your best bet is to go with whatever someone has laying around, and even then any stock cams you buy used would need polished up if you want perfection (but in most cases not at all necessary if there’s no damage).

 

[Chad Noles]

I have a 1993 N/A 7bolt. That why I wanted the 1.3974 lift cams. My Haynes book strangely doesn't list the manual exhaust. I assume it's the same 1.3974 lift. I check only with a cheap caliper 1.40 on the intake but 1.39 on the exhaust. I think the intake is ok though it has a B and 3 dots stamped on it just behind the front cam oil seal. The exhaust has a B stamped with 1 dot on it. I'm not 100% sure they are the original cams for the car. I wasn't sure if the 6 bolt cams were the same as the 7 bolt especially due to my car being N/A, not a turbo.

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Sorry if I messed up all these picts. I'm not sure how that picture thing is supposed to work. The main thing is I thought any turbo cams might be different than N/A cams the help prevent pre-detonation. I wasn't sure the 6 bolt cams were the same as the 7 bolt N/A cams.The intake cams seemed to fit easily.The exhaust had a bit of a curve when I first laid it in. I just wanted to make sure everything I am doing is ok. I still may be in the market for cams if these don't work out for me.

Thanks for all the help.

 

[donniekak]

Close enough?

Mitsubishi/DSM Camshafts

Mitsubishi / DSM - 4G63 Stock Replacement INT/EXH - Dur @ .050”: 176/167 Lift: 216°/204° RR: 1.7/1.7 Gross Lift: .367”/.347”

crower.com

 

[DSMPT]

i wasn't sure if the 6 bolt cams were the same as the 7 bolt especiallly due to my car being N/A,not a turbo

All the 1g stock exhaust cams are the same. There is no difference between 1g turbo and non turbo, manual and auto, 6 bolt/7 bolt. The intake cam is the one making them different.

 

[1990TSIAWDTALON]

Here is a good old thread for ID purposes thanks to @BogusSVO from 2016. Dale new his stuff.
Thread 'Camshaft Identification Information' https://www.dsmtuners.com/threads/camshaft-identification-information.435135/

 

[Chad Noles]

After much reading, studying, pondering, etc. I think I have a bit more understanding. Thanks all that replied and the cam id thread link.

For now I'm just gonna try the cams I have because I've got to get the motor all back together first. I had a fit getting the timing belt right due to my own multiple mistakes and reworks. It seems to be right now. Got to torque the cams to spec, finish the front cover and pulleys, then on to the oil pan, then the new clutch.

Thanks for everyones help. I am at least less confused now.